Experimental evidence for a two-band superconducting state of NbSe2 single crystals

Abstract

We report on measurements and a detailed analysis of the reversible magnetization of superconducting NbSe2 single crystals. By comparing the experimental data with Ginzburg Landau theory we show that superconductivity in NbSe2 cannot be explained by an anisotropic single-band, but by a multi-band scenario. Applying a simple two-band model reveals the basic mixed-state parameters, which are quite different in the two bands. We identify a strongly anisotropic band that determines the properties at high magnetic fields, and a second almost isotropic band that dominates at low fields. Our method is well suited for distinguishing anisotropic single-band from multi-band superconductivity in various materials.

5 pages, 2 figures

References in corpus (7)

• Very High Field Two-Band Superconductivity in LaFeAsO_0.89F_0.11
• Penetration depth study of superconducting gap structure of 2\textit{H}-NbSe${}_2$
• Intrinsic atomic scale modulations of the superconducting gap of 2H-NbSe2
• Universal observation of multiple order parameters in cuprate superconductors
• Experimental evidence for a two-gap structure of superconducting NbSe_2: a specific heat study in external magnetic fields
• Evidence for two distinct anisotropies in the oxypnictide superconductors SmFeAsO_(0.8)F_(0.2) and NdFeAsO_(0.8)F_(0.2)
• Simulation of the current dynamics in superconductors: Application to magnetometry measurements

Cited by in corpus (12)

• How the vortex lattice of a superconductor becomes disordered: a study by scanning tunneling spectroscopy
• Superconducting proximity effect in a transparent van der Waals superconductor-metal junction
• SrPt${}_3$P: two-band single-gap superconductor
• Anisotropic type-I superconductivity and anomalous superfluid density in OsB 2
• Spectroscopy of $NbS{e}_2$ using Energy-Tunable Defect-Embedded Quantum Dots
• Probing Vortex Dynamics in 2D Superconductors with Scanning Quantum Microscope
• Direct visualization of quasiparticle concentration around superconducting vortices
• Two characteristic contributions to the superconducting state of 2$H$-NbSe${}_2$
• CMOS-Compatible Ultrathin Superconducting NbN Thin Films Deposited by Reactive Ion Sputtering on 300 mm Si Wafer
• S-shaped suppression of the superconducting transition temperature in Cu-intercalated NbSe2
• Supercurrent effect in a charge density wave intertwined superconductor
• Atomic-scale Visualization of Electronic Fluid Flow